/Engine/Plugins/Experimental/PCG/Source/PCG/Public/Metadata/PCGMetadataAccessor.h
Assigns a metadata entry key and will copy attribute values if from an unrelated metadata. Note: a null ParentMetadata assumes this is the same as Metadata
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="PCG|Metadata", Meta=(ScriptMethod)) static void InitializeMetadata ( [FPCGPoint](API\Plugins\PCG\FPCGPoint) & Point, [UPCGMetadata](API\Plugins\PCG\Metadata\UPCGMetadata) * Metadata, const [FPCGPoint](API\Plugins\PCG\FPCGPoint) & ParentPoint, const [UPCGMetadata](API\Plugins\PCG\Metadata\UPCGMetadata) * ParentMetadata )